Three lamps are connected in series across a 120V supply and take a current of 1.5A. If the resistance of two of the lamps is 30Ω, what is the resistance of the third lamp?

SSC JE Electrical 2019 with solution SET-1
Three lamps are connected in series across a 120V supply and take a current of 1.5A. If the resistance of two of the lamps is 30Ω, what is the resistance of the third lamp?

30Ω

20Ω

40Ω

10Ω

30Ω

20Ω

40Ω

10Ω

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SSC JE Electrical 2019 with solution SET-1
In the two wattmeter method, the readings of the two wattmeters are 500W, 500W respectively. The load power factor in a balanced 3-phase 3-wire circuit is:

0.8

1

0.5

0.9

0.8

1

0.5

0.9

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SSC JE Electrical 2019 with solution SET-1
In the speed-time curve of a train, speed in and time are plotted

km/s; sec

km/h; hour

km/h; sec

km/s; hour

km/s; sec

km/h; hour

km/h; sec

km/s; hour

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SSC JE Electrical 2019 with solution SET-1
In an AC network, the load connected is (10 + j10). The phase relation between the voltage applied and the current through the load is:

Voltage and current are in phase with each other

Voltage leads current by 45°

Voltage lags current by 30°

Voltage lags current by 45°

Voltage and current are in phase with each other

Voltage leads current by 45°

Voltage lags current by 30°

Voltage lags current by 45°

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SSC JE Electrical 2019 with solution SET-1
Find H = _____ A/m at the center of a circular coil of diameter 1 m and carrying a current of 2A

8 A/m

1 A/m

4 A/m

2 A/m

8 A/m

1 A/m

4 A/m

2 A/m

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SSC JE Electrical 2019 with solution SET-1
Let T be the net torque developed by the rotor runs at ω rad/s. What is the mechanical power developed?

Pmech = (2πωT)/60

Pmech = (2πωT)

Pmech = (ωT)/60

Pmech = ωT

Pmech = (2πωT)/60

Pmech = (2πωT)

Pmech = (ωT)/60

Pmech = ωT

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SSC JE Electrical 2019 with solution SET-1

SSC JE Electrical 2019 with solution SET-1 Three lamps are connected in series across a 120V supply and take a current of 1.5A. If the resistance of two of the lamps is 30Ω, what is the resistance of the third lamp?

SSC JE Electrical 2019 with solution SET-1 In the two wattmeter method, the readings of the two wattmeters are 500W, 500W respectively. The load power factor in a balanced 3-phase 3-wire circuit is:

SSC JE Electrical 2019 with solution SET-1 In the speed-time curve of a train, speed in and time are plotted

SSC JE Electrical 2019 with solution SET-1 In an AC network, the load connected is (10 + j10). The phase relation between the voltage applied and the current through the load is:

SSC JE Electrical 2019 with solution SET-1 Find H = _____ A/m at the center of a circular coil of diameter 1 m and carrying a current of 2A

SSC JE Electrical 2019 with solution SET-1 Let T be the net torque developed by the rotor runs at ω rad/s. What is the mechanical power developed?

SSC JE Electrical 2019 with solution SET-1
Three lamps are connected in series across a 120V supply and take a current of 1.5A. If the resistance of two of the lamps is 30Ω, what is the resistance of the third lamp?

SSC JE Electrical 2019 with solution SET-1
In the two wattmeter method, the readings of the two wattmeters are 500W, 500W respectively. The load power factor in a balanced 3-phase 3-wire circuit is:

SSC JE Electrical 2019 with solution SET-1
In the speed-time curve of a train, speed in and time are plotted

SSC JE Electrical 2019 with solution SET-1
In an AC network, the load connected is (10 + j10). The phase relation between the voltage applied and the current through the load is:

SSC JE Electrical 2019 with solution SET-1
Find H = _____ A/m at the center of a circular coil of diameter 1 m and carrying a current of 2A

SSC JE Electrical 2019 with solution SET-1
Let T be the net torque developed by the rotor runs at ω rad/s. What is the mechanical power developed?